The cover comes from the forthcoming Immortal Randy Rhoads: The Ultimate Tribute. "Randy Rhoads is my favorite guitar player of all time," Tom Morello tells Rolling Stone. "It was his poster on my wall when I was practicing eight hours a day, and I named my firstborn son, Rhoads, after him. Serj, Rudy, Vinny and I rocked 'Crazy Train' as a sonic tribute to one of rock's greatest fallen heroes. Crank it." Rudy is Rudy Sarzo, a bassist who played with Rhoads in Ozzy's band as well as Quiet Riot (which Rhoads cofounded); Vinny is Vinny Appice, a drummer with three Sabbath albums and a ton of Dio records under his belt.

You might not peg Morello's experimental axemanship as a match for Rhoads' virtuoso lightning fretwork, but Morello nails the riffs, adds some of his own buzzy sauce, and serves up his own dizzying solo at the 2:40 mark. (And don't miss the finale noodling, either.) Meanwhile, Serj's giant croon is certainly a unique spin on Ozzy's trademark shriek.

Randy Rhoads died in a 1982 plane accident at the age of 25. He was the guitarist for Ozzy's solo debut, Blizzard of Ozz, as well as the sophomore LP Diary of a Madman.

30 Best Live Performance Photos of 2014

Remember when Miley first shocked us on her Bangerz tour? Or when 30 Seconds to Mars hit the road with Linkin Park? Or how about Beyoncé slaying us at the VMAs? Look back at the year that gave us these incredible performances and more